Science · Std 5 / Heat Multiple choiceExerciseStandard 5 Why do railway lines have small gaps between sections? Ato make noiseBto let water drainCto save metalDto allow for expansion in hot weather Check my answer Source: Thuto360 practice Report a problemWhat's wrong?The marked answer is wrongThe question is unclearA spelling or typing mistakeThe picture is wrong or missingSomething elseAnything to addSend More like thisWhat happens to most solids when they are heated?Multiple choiceStd 5HeatAt what temperature does pure water boil at sea level?Multiple choiceStd 5HeatWhat is the normal temperature of the human body?Multiple choiceStd 5HeatAt what temperature does pure water freeze?Multiple choiceStd 5HeatWhy does a flask keep tea hot?Multiple choiceStd 5Heat